Trolley bus bar



FIG. 1 is a front elevational view of a trolley bus bar showing our design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof; and

FIG. 7 is a perspective view thereof.

The trolley bus bar in FIGS. 1 through 4 is shown broken away in the center for convenience of illustration. 

Theornamental design for a trolley bus bar, as shown and described. 